Effects of disturbance severity upon numbers of axillary branches and adventitious buds and shoots.

The responses of the numbers of axillary branches and buds and shoots to increasing severity of disturbance are presented graphically using up and down arrows. The test statistic is a likelihood ratio to be compared with a χ2 distribution with one degree of freedom. Type I error estimate (significance) is shown in parentheses and the result shown in corrected row represents a model incorporating phylogenetic correction. The number of axillary branches character does not require correction, as it lacks phylogenetic signal (see Methods).